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  Weyl fermions in a non-abelian gauge background and trace anomalies

Bastianelli, F., & Broccoli, M. (2019). Weyl fermions in a non-abelian gauge background and trace anomalies. Journal of High Energy Physics, 2019 (10): 241. doi:10.1007/JHEP10(2019)241.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-9007-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-1783-D
Genre: Journal Article

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 Creators:
Bastianelli , Fiorenzo, Author
Broccoli, Matteo1, Author              
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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Free keywords: High Energy Physics - Theory, hep-th
 Abstract: We study the trace and chiral anomalies of Weyl fermions in a non-abelian gauge background in four dimensions. Using a Pauli-Villars regularization we identify the trace anomaly, proving that it can be cast in a gauge invariant form, even in the presence of the non-abelian chiral anomaly, that we rederive to check the consistency of our methods. In particular, we find that the trace anomaly does not contain any parity-odd topological contribution, whose presence has been debated in the recent literature.

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 Dates: 2019-08-102019
 Publication Status: Published in print
 Pages: 14 pages
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1908.03750
URI: http://arxiv.org/abs/1908.03750
DOI: 10.1007/JHEP10(2019)241
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Title: Journal of High Energy Physics
Source Genre: Journal
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Pages: - Volume / Issue: 2019 (10) Sequence Number: 241 Start / End Page: - Identifier: -